package com.zuoye.Service;

import com.zuoye.Opjo.Class;
import com.zuoye.Opjo.Student;

import java.util.ArrayList;

public interface ClaStuInterface {
    int addClaStu(ArrayList<Class> cla, ArrayList<Student> stu);

    int delClaStu(int cla_id);

    int updClaStu(int id, int num);

    ArrayList<?> queClaStu();


}
